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'(No Model.) 3 Sheets-Sheet 1.

R. GRILLI.

. BICYCLE. No. 563,958. Y Patented July 14, 1896.

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e s Sheet 2.

R. GRILLI. BICYCLE.

(No Model.)

Patented July 14, 1896.

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3 Sheets-Sheet 3. R, GRILLI. BICYCLE.

Patented July- 14, -1896.

'UNITED STATES PATENT OFFIOE,

ROMEO GRILLI, or CHARKOFF, RUSSIA.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 563,958, dated July 14,1896. Application filed April 27, 1896- Serial No. 589,194. 0 model.)Patented in England September 21, 1895,11'0. 17,668-

T0 at whom it may concern: I

Be it known that I, ROMEO GRILLI, asubject of the King of Italy,residing at 15 Sumscaia, Charkoff, Russia, have invented certain new anduseful Improvements in or relating to Bicycles, (patented in GreatBritain, No. 17,668, dated September 21, 1895,) of which the followin gis a specification.

This invention relates to special appliances affixable to bicycles inorder that two persons may occupy seats on either side of thebicycleframe, which, according to my invention, is not in any wayaltered if it be desired to use the bicycle in the ordinary way for asingle rider sitting above the frame in the wellknown manner, exceptperhaps the shifting of the ordinary seat for use by one of the tworiders when my apparatus is affixed to the frame.

For the purpose of my invention I employ a number of tubes or rodsWithpermanent sockets, or with clipping devices of special formation, toconstitute a frame capable of attachment to either end of the axle ofthe hind or drive wheel and to the center stay; also to the pedal-pins,there being a series of branch tubes or rods leading to other permanentsockets or clipping devices for supporting a distinct set of cranks andpedals, the inner of which cranks on each side are readily connectableto the existing pedal-pins for duplicating the action, so that eachrider has the power of exercising his or her feet for propulsionpurposes, the power being communicated by the existing chain and gear,the two persons sitting abreast and having an unbroken view in frontwhile traveling, as is not the case with what is known as tandembicycles, in which one person sits behind the other. I provide socketsor clipping devices on a cross tube or rod for the adjustment of thesaddle-pillar or L-pins and seats to accommodate varying weights of theriders for balancing purposes, and I clip on the front frame-tube atransverse bar for carrying duplicate handle-bars and handles.

My invention is represented in the accompanying drawings, in which theordinary bicycle is shown in thin lines and my additional double-seatedframe in shaded lines.

Figure 1, is a plan of a rear-driving safetybicycle with my additionaldoubleseated frame attached; Fig. 2, a side elevation of same; Fig. 3,an elevation from the front of machine, and Fig. 4, a detached plan ofpart of my additional double frame with my adjustable clips in lieu ofthe fixed sockets shown on the previous figures.

A represents the front or steering wheel of a single safety rear-driverbicycle; B, rear drive-wheel, on the hub O of which wheel the chain Doperates from the sprocket E, this being on thepedal-crank axle in thewellknown manner.

F F are tubes or rods with flattened lower ends holed for engaging overthe extremities of the hind axle, on which they are secured by lock-nutsG, and which otherwise retains the hind wheel B within the back fork II.The tubes or rods F F are set at an angle upwardly, outwardly, andforwardly, where they are secured to sockets or clipping devices I I,attached to the cross-bar J, there being other tubes or rods K K fromthe same sockets or clipping devices I I leading downwardly,forupwardly, rearwardly, and inwardly to other sockets or clippingdevices P P on the cross- .bar J and to the rods F F, respectively, the

three tubes or rods K K N N N N of the additional frame constituting anirregular tripod for rigid connection to the axle of the hind wheel B bythe stay-rods F F and the cross-bar J and additional pedal-axles M M.

The central part of the cross-bars len gth has another socket orclipping device Q, with a curved spur R extending from it, the oppositeforwardly-projecting end having depending piece S for entering thecenter stay T and from which the ordinary saddle-pillar had beenremoved, said dependingpieceSbeing clipped in said center stay by thesame clip which otherwise fixed the saddle-pillar. The cross-bar J hasalso clipping devices U U adjustable thereon for carrying the twosaddle-pillars V V and seats 'W V for the two riders, which. clips canbe moved along the bar J toward or from the center of the machine tosuit the different weights of the riders, and so balance them forkeeping the machine upright.

\Vith two ladies sitting abreast 011 my duplicated machine very little,if any, adjustment of the saddles would be required, but if very unequalweights, such as between that of a lady and gentleman, the lady beingprobably the lighter weight of the two, would require to be set fartherfrom the center or the gentleman be adjusted nearer to the center of thebar for balancing purposes, there being no more trouble in doing thisthan in adjusting the saddle-pillar of a single-seated machine for afresh rider.

I have shown for sake of convenience on my drawings a double set ofhandles a a and handle-bars b I), secured to the front frame-tube c,said handle-bars Z) Z; being jointed to short rods 0 0, leading to andconnected with a spur (I, attached to and projecting forwardly from thestalk of the steering-post e, the original handle-bar having beenpreviously removed. This, however, can be aflixed and employed with themachine in which my additional frame is fitted if desired, or theordinary handles without removing them can be used by the two riders,but such arrangement forms no part of my present invention and I make noclaim thereto.

hat I claim, and desire to secure by Letters Patent, is-

1. An attachment for bicycles, comprising two sets of irregular tripods,a crank supported in the apex of each tripod, a pedal on the outersection of each crank, a cross-bar connecting two legs of one tripodwith the two corresponding legs of the other tripod, a rod projectingdownwardly and rearwardly from each end of said cross-bar and connectedwith the third leg of the tripod and adapted to engage with its lowerfree end the axle of the rear wheel, a curved spur projecting upward andforward from the center of said cross-bar and provided with adownwardly-projecting pin, adapted to engage the center stay of anordinary bicycle, and a saddle-pillar adjustably arranged on thecross-bar and on each side of the curved spur, all said parts,substantially as and for the purposes described.

2. An attachment for bicycles, comprising two distinct yetoppositely-arranged irregular tripods, each of said tripods beingconnected at its apex by a combination-socket, into which the respectivelegs of the tripod are adjustably arranged, a crank in each socket, apedal on the outer section of each crank, a sleeve or clip at the outerend of each tripod-leg, a cross-bar connecting two of those clips of onetripod with the two corresponding ones of the other tripod, a rodprojecting rear and downwardly from each end of said cross-bar andadjustably arranged in the respective clips, said rod penetrating theclip at the free end of the third leg, and adapted to engage with itslower portion the axle of the rear wheel of an ordinary bicycle, acurved spur adj u stably arranged on the cross-bar and substantially inits center and adapted, with its downwardlyprojecting forward portion,to engage the center stay of the bicycle, and a saddle-pillar adjustablyarranged on the cross-bar and on each side of the curved spur, all saidparts, substantially as and for the purposes described.

3. An attachment for bicycles, comprising two distinct yetoppositely-arranged irregular tripods, each of said tripods beingconnected at its apex by a combination sleeve or socket, a crank in eachsocket, a pedal on the outer section of each crank, the inner section ofeach crank being adapted to engage the axlepin of the pedal of anordinary bicycle, a crossbar connecting two legs on one tripod with thetwo corresponding legs of the other tripod, a rod projecting downwardlyand rearwardly from each end of the cross-bar, said rod being connectedin about its middle with the third leg of the said tripod, and beingadapted to en gage with its lower free end the axle of the bicycle, acurved spur projecting upward and forward from the center of thecrossbar and provided at its free end with a downwardly extending pinadapted to engage the center stay of the bicycle, a sleeve adjustablyarranged on the crossbar and 011 each side of the spur, and asaddle-pillar vertical adjustably arranged in each of said sleeves, allsaid parts substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit nesses.

ROMEO GRILLI.

Vitnesses:

PERCY E. MATTooKs, EDMUND S. SNEWIN.

